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Finding the Fourth Proportional to 6,515.72, 9,773.59 and 2,619.21

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Solution

The fourth proportional to 6,515.72, 9,773.59 and 2,619.21 is: 3,928.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,515.72 : 9,773.59 = 2,619.21 : x
  2. Step 2: Convert to fraction form
    6,515.72/9,773.59 = 2,619.21/x
  3. Step 3: Cross multiply
    6,515.72x = 9,773.59 × 2,619.21
  4. Step 4: Simplify right side
    6,515.72x = 25,599,084.82
  5. Step 5: Solve for x
    x = 25,599,084.82/6,515.72
  6. Step 6: Final answer
    x = 3,928.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.